RESOLVED: (TD specific) 'StdoutCatcher' object has no attribute 'fileno'

Bugs
1 
import sys
import subprocess
subprocess.Popen(["pip", "install" ,"pandas"], stdout = sys.stdout, stderr = sys.stderr)

works fine in python console, but in TD

python >>> 
Traceback (most recent call last):
  File "</project1/text4:op('/project1/text4').run()>", line 1
td.Error: File "/project1/text4", line 3
  File "C:\Program Files\Derivative\TouchDesigner.2020.23680\bin\lib\subprocess.py", line 728, in __init__
    errread, errwrite) = self._get_handles(stdin, stdout, stderr)
  File "C:\Program Files\Derivative\TouchDesigner.2020.23680\bin\lib\subprocess.py", line 1057, in _get_handles
    c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
AttributeError: 'StdoutCatcher' object has no attribute 'fileno'
Results of run operation resulted in exception.
2

Thanks for the example.
We’ll investigate to see what would be an appropriate value for that method.

3

Hi Achim
Popen does not work with file like objects:

https://bugs.python.org/issue29989

They require a low level operating system file descriptor for inter process communication unfortunately.